Final answer:
The provided texts do not specify an anthem for Gavaldon; they include various poetic verses with different themes and settings.
Step-by-step explanation:
The village anthem for Gavaldon is not clearly identified from the provided texts.
These texts represent a collection of different verses and songs from various sources that do not directly reference an anthem for a village named Gavaldon.
Instead, what is provided are examples of poetic verses that demonstrate the kind of thematic material that could be woven into songs or anthems referencing places such as Camelot, Shalott, and the joys and sorrows that such songs could convey.